Sugar

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There are a number of sugars to be found, including: Dextrose, Fructose, Lactose, Maltose and Sucrose.

Liquid sweeteners do not have quite the longevity of dry sugars. Honey, Molasses, Corn syrup and Maple Syrup may crystallize or mold during long storage. These syrups are chemically not as simple as table sugar and therefore lose flavor and otherwise break down over a long period of time.

Buying granulated sugar and its close cousins is really a very simple matter. Buy a brand you know you can trust and be certain the package is clean, dry and has no insect infestation. There's very little that can go wrong with it.